(Compound 11 Darvesh et al. 2008) some Antagonist activity at muscarinic M 5-1-4 receptors histamine serotonine receptors. Ki BCHE 0.65 micro M (for comparison Donepezil 2.21 for BCHE and 0.024 for ACHE), Ka ACHE 4600 M-1min-1 (for comparison rivastigmine 1130 M-1min-1)